package day_2022_4_to_7.day48;

/**
 * @author haomin
 * @date 2022/05/24 20:14
 **/

import java.util.Scanner;
import java.util.Arrays;

public class Day27_2_Triangle {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNext()) {
            double[] arr = new double[3];
            for (int i = 0; i < 3; i++) {
                arr[i] = in.nextDouble();
            }
            Arrays.sort(arr);
            if (arr[0] + arr[1] > arr[2]) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    }
}
